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Offlinenostrafrog
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Registered: 02/02/06
Posts: 28
Last seen: 17 years, 5 months
greenie in casing
    #5670135 - 05/24/06 08:20 PM (17 years, 8 months ago)

Ive got a problem thats been plagueing me on these mexicans. Everything looks great in the jars... perfectly colonized... I pasturize horse poo at 175 for 2 hours then spawn to that after it has cooled.... put it in the terrarium. Gets nice and colonized. I then sterilize my casing (vermiculite, calcium carbonate, and peat moss). I didnt used to but apparently sterilizing doenst help either. The green bubbly shit appears everytime about 7 days after I put on the casing. THis did not used to happen when I waas using B+ but the season has changed too... lots of rain...
Any ideas for erradicating this major problem.... Its always the casing that goes..... Ive also used H202 solotion (10% h202 90 % water) could air exchange have something to do with this?


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Invisiblemonstermitch
Growing in Bags Doesn't Work

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Registered: 02/10/06
Posts: 3,911
Loc: Arizona Bay Flag
Re: greenie in casing [Re: nostrafrog]
    #5670193 - 05/24/06 08:42 PM (17 years, 8 months ago)

casing has to be pasteurized.

if not, sterilized.

using h/poo. skip the casing for the first few times.

Once you get no casing down, try casing in one tub/tray.

read hyphae's pinning strategy.

always pasteurize/sterilize casing. I recommend pasteurizing, but both will work.


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OfflineSinthetic
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Registered: 12/05/05
Posts: 812
Last seen: 15 years, 6 months
Re: greenie in casing [Re: monstermitch]
    #5673107 - 05/25/06 01:38 PM (17 years, 8 months ago)

What's your humidity and temp? Do you incubate the casing at all? Mold typically like moist warm environments.


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OfflineRogerRabbitM
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Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 3 days
Trusted Cultivator
OG Cultivator
Re: greenie in casing [Re: Sinthetic]
    #5673333 - 05/25/06 02:46 PM (17 years, 8 months ago)

Green molds are typically introduced at spawning when your grains are exposed and damaged, and they take hold on the damaged spawn, then continue growing in your substrate. The problem is worse when using popcorn as spawn due to the large kernel size.

If your substrate inoclation was secure, then make sure you have plenty of air exchange. Molds need stale air, mushroom mycelium thrives in fresh air.

A sterilized casing layer will be more prone to contamination than a pasteurized one. In fact, certain species won't pin if you sterilize the casing layer. Agaricus and azurescens are two such species.
RR


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